mirror of https://github.com/Siphonay/mastodon
Convert signature verification specs to request specs (#28443)
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Claire
GitHub
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bb8077e784
commit
a2624ff739
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@ -1,305 +0,0 @@
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# frozen_string_literal: true
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require 'rails_helper'
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describe SignatureVerification do
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let(:wrapped_actor_class) do
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Class.new do
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attr_reader :wrapped_account
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def initialize(wrapped_account)
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@wrapped_account = wrapped_account
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end
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delegate :uri, :keypair, to: :wrapped_account
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end
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end
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controller(ApplicationController) do
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include SignatureVerification
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before_action :require_actor_signature!, only: [:signature_required]
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def success
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head 200
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end
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def alternative_success
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head 200
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end
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def signature_required
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head 200
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end
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end
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before do
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routes.draw do
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match :via => [:get, :post], 'success' => 'anonymous#success'
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match :via => [:get, :post], 'signature_required' => 'anonymous#signature_required'
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end
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end
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context 'without signature header' do
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before do
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get :success
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end
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describe '#signed_request?' do
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it 'returns false' do
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expect(controller.signed_request?).to be false
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end
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end
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describe '#signed_request_account' do
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it 'returns nil' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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end
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context 'with signature header' do
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let!(:author) { Fabricate(:account, domain: 'example.com', uri: 'https://example.com/actor') }
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context 'without body' do
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before do
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get :success
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fake_request = Request.new(:get, request.url)
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fake_request.on_behalf_of(author)
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request.headers.merge!(fake_request.headers)
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end
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describe '#signed_request?' do
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it 'returns true' do
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expect(controller.signed_request?).to be true
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end
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end
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describe '#signed_request_account' do
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it 'returns an account' do
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expect(controller.signed_request_account).to eq author
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end
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it 'returns nil when path does not match' do
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request.path = '/alternative-path'
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expect(controller.signed_request_account).to be_nil
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end
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it 'returns nil when method does not match' do
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post :success
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expect(controller.signed_request_account).to be_nil
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end
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end
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end
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context 'with a valid actor that is not an Account' do
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let(:actor) { wrapped_actor_class.new(author) }
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before do
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get :success
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fake_request = Request.new(:get, request.url)
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fake_request.on_behalf_of(author)
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request.headers.merge!(fake_request.headers)
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allow(ActivityPub::TagManager.instance).to receive(:uri_to_actor).with(anything) do
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actor
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end
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end
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describe '#signed_request?' do
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it 'returns true' do
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expect(controller.signed_request?).to be true
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end
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end
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describe '#signed_request_account' do
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it 'returns nil' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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describe '#signed_request_actor' do
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it 'returns the expected actor' do
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expect(controller.signed_request_actor).to eq actor
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end
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end
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end
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context 'with request with unparsable Date header' do
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before do
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get :success
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fake_request = Request.new(:get, request.url)
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fake_request.add_headers({ 'Date' => 'wrong date' })
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fake_request.on_behalf_of(author)
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request.headers.merge!(fake_request.headers)
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end
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describe '#signed_request?' do
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it 'returns true' do
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expect(controller.signed_request?).to be true
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end
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end
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describe '#signed_request_account' do
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it 'returns nil' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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describe '#signature_verification_failure_reason' do
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it 'contains an error description' do
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controller.signed_request_account
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expect(controller.signature_verification_failure_reason[:error]).to eq 'Invalid Date header: not RFC 2616 compliant date: "wrong date"'
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end
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end
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end
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context 'with request older than a day' do
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before do
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get :success
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fake_request = Request.new(:get, request.url)
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fake_request.add_headers({ 'Date' => 2.days.ago.utc.httpdate })
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fake_request.on_behalf_of(author)
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request.headers.merge!(fake_request.headers)
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end
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describe '#signed_request?' do
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it 'returns true' do
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expect(controller.signed_request?).to be true
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end
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end
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describe '#signed_request_account' do
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it 'returns nil' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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describe '#signature_verification_failure_reason' do
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it 'contains an error description' do
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controller.signed_request_account
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expect(controller.signature_verification_failure_reason[:error]).to eq 'Signed request date outside acceptable time window'
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end
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end
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end
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context 'with inaccessible key' do
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before do
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get :success
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author = Fabricate(:account, domain: 'localhost:5000', uri: 'http://localhost:5000/actor')
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fake_request = Request.new(:get, request.url)
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fake_request.on_behalf_of(author)
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author.destroy
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request.headers.merge!(fake_request.headers)
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stub_request(:get, 'http://localhost:5000/actor#main-key').to_raise(Mastodon::HostValidationError)
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end
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describe '#signed_request?' do
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it 'returns true' do
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expect(controller.signed_request?).to be true
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end
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end
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describe '#signed_request_account' do
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it 'returns nil' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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end
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context 'with body' do
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before do
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allow(controller).to receive(:actor_refresh_key!).and_return(author)
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post :success, body: 'Hello world'
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fake_request = Request.new(:post, request.url, body: 'Hello world')
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fake_request.on_behalf_of(author)
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request.headers.merge!(fake_request.headers)
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end
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describe '#signed_request?' do
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it 'returns true' do
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expect(controller.signed_request?).to be true
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end
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end
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describe '#signed_request_account' do
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it 'returns an account' do
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expect(controller.signed_request_account).to eq author
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end
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end
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context 'when path does not match' do
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before do
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request.path = '/alternative-path'
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end
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describe '#signed_request_account' do
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it 'returns nil' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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describe '#signature_verification_failure_reason' do
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it 'contains an error description' do
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controller.signed_request_account
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expect(controller.signature_verification_failure_reason[:error]).to include('using rsa-sha256 (RSASSA-PKCS1-v1_5 with SHA-256)')
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expect(controller.signature_verification_failure_reason[:signed_string]).to include("(request-target): post /alternative-path\n")
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end
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end
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end
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context 'when method does not match' do
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before do
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get :success
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end
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describe '#signed_request_account' do
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it 'returns nil' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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end
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context 'when body has been tampered' do
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before do
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post :success, body: 'doo doo doo'
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end
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describe '#signed_request_account' do
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it 'returns nil when body has been tampered' do
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expect(controller.signed_request_account).to be_nil
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end
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end
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end
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end
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end
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context 'when a signature is required' do
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before do
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get :signature_required
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end
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context 'without signature header' do
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it 'returns HTTP 401' do
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expect(response).to have_http_status(401)
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end
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it 'returns an error' do
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expect(Oj.load(response.body)['error']).to eq 'Request not signed'
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end
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end
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end
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end
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@ -0,0 +1,332 @@
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# frozen_string_literal: true
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require 'rails_helper'
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describe 'signature verification concern' do
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before do
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stub_tests_controller
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# Signature checking is time-dependent, so travel to a fixed date
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travel_to '2023-12-20T10:00:00Z'
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end
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after { Rails.application.reload_routes! }
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# Include the private key so the tests can be easily adjusted and reviewed
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let(:actor_keypair) do
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OpenSSL::PKey.read(<<~PEM_TEXT)
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-----BEGIN RSA PRIVATE KEY-----
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MIIEowIBAAKCAQEAqIAYvNFGbZ5g4iiK6feSdXD4bDStFM58A7tHycYXaYtzZQpI
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eHXAmaXuZzXIwtrP4N0gIk8JNwZvXj2UPS+S07t0V9wNK94he01LV5EMz/GN4eNn
|
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|
FmDL64HIEuKLvV8TvgjbUPRD6Y5X0UpKi2ZIFLSb96Q5w0Z/k7ntpVKV52y8kz5F
|
||||||
|
jr/O/0JuHryZe0yItzJh8kzFfeMf0EXzfSnaKvT7P9jhgC6uTre+jXyvVZjiHDrn
|
||||||
|
qvvucdI3I7DRfXo1OqARBrLjy+TdseUAjNYJ+OuPRI1URIWQI01DCHqcohVu9+Ar
|
||||||
|
+BiCjFp3ua+XMuJvrvbD61d1Fvig/9nbBRR+8QIDAQABAoIBAAgySHnFWI6gItR3
|
||||||
|
fkfiqIm80cHCN3Xk1C6iiVu+3oBOZbHpW9R7vl9e/WOA/9O+LPjiSsQOegtWnVvd
|
||||||
|
RRjrl7Hj20VDlZKv5Mssm6zOGAxksrcVbqwdj+fUJaNJCL0AyyseH0x/IE9T8rDC
|
||||||
|
I1GH+3tB3JkhkIN/qjipdX5ab8MswEPu8IC4ViTpdBgWYY/xBcAHPw4xuL0tcwzh
|
||||||
|
FBlf4DqoEVQo8GdK5GAJ2Ny0S4xbXHUURzx/R4y4CCts7niAiLGqd9jmLU1kUTMk
|
||||||
|
QcXfQYK6l+unLc7wDYAz7sFEHh04M48VjWwiIZJnlCqmQbLda7uhhu8zkF1DqZTu
|
||||||
|
ulWDGQECgYEA0TIAc8BQBVab979DHEEmMdgqBwxLY3OIAk0b+r50h7VBGWCDPRsC
|
||||||
|
STD73fQY3lNet/7/jgSGwwAlAJ5PpMXxXiZAE3bUwPmHzgF7pvIOOLhA8O07tHSO
|
||||||
|
L2mvQe6NPzjZ+6iAO2U9PkClxcvGvPx2OBvisfHqZLmxC9PIVxzruQECgYEAzjM6
|
||||||
|
BTUXa6T/qHvLFbN699BXsUOGmHBGaLRapFDBfVvgZrwqYQcZpBBhesLdGTGSqwE7
|
||||||
|
gWsITPIJ+Ldo+38oGYyVys+w/V67q6ud7hgSDTW3hSvm+GboCjk6gzxlt9hQ0t9X
|
||||||
|
8vfDOYhEXvVUJNv3mYO60ENqQhILO4bQ0zi+VfECgYBb/nUccfG+pzunU0Cb6Dp3
|
||||||
|
qOuydcGhVmj1OhuXxLFSDG84Tazo7juvHA9mp7VX76mzmDuhpHPuxN2AzB2SBEoE
|
||||||
|
cSW0aYld413JRfWukLuYTc6hJHIhBTCRwRQFFnae2s1hUdQySm8INT2xIc+fxBXo
|
||||||
|
zrp+Ljg5Wz90SAnN5TX0AQKBgDaatDOq0o/r+tPYLHiLtfWoE4Dau+rkWJDjqdk3
|
||||||
|
lXWn/e3WyHY3Vh/vQpEqxzgju45TXjmwaVtPATr+/usSykCxzP0PMPR3wMT+Rm1F
|
||||||
|
rIoY/odij+CaB7qlWwxj0x/zRbwB7x1lZSp4HnrzBpxYL+JUUwVRxPLIKndSBTza
|
||||||
|
GvVRAoGBAIVBcNcRQYF4fvZjDKAb4fdBsEuHmycqtRCsnkGOz6ebbEQznSaZ0tZE
|
||||||
|
+JuouZaGjyp8uPjNGD5D7mIGbyoZ3KyG4mTXNxDAGBso1hrNDKGBOrGaPhZx8LgO
|
||||||
|
4VXJ+ybXrATf4jr8ccZYsZdFpOphPzz+j55Mqg5vac5P1XjmsGTb
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-----END RSA PRIVATE KEY-----
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PEM_TEXT
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end
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context 'without a Signature header' do
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it 'does not treat the request as signed' do
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get '/activitypub/success'
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expect(response).to have_http_status(200)
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expect(body_as_json).to match(
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signed_request: false,
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signature_actor_id: nil,
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error: 'Request not signed'
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)
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end
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context 'when a signature is required' do
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it 'returns http unauthorized with appropriate error' do
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get '/activitypub/signature_required'
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expect(response).to have_http_status(401)
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expect(body_as_json).to match(
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error: 'Request not signed'
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)
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end
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end
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end
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context 'with an HTTP Signature from a known account' do
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let!(:actor) { Fabricate(:account, domain: 'remote.domain', uri: 'https://remote.domain/users/bob', private_key: nil, public_key: actor_keypair.public_key.to_pem) }
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context 'with a valid signature on a GET request' do
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let(:signature_header) do
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||||||
|
'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="date host (request-target)",signature="Z8ilar3J7bOwqZkMp7sL8sRs4B1FT+UorbmvWoE+A5UeoOJ3KBcUmbsh+k3wQwbP5gMNUrra9rEWabpasZGphLsbDxfbsWL3Cf0PllAc7c1c7AFEwnewtExI83/qqgEkfWc2z7UDutXc2NfgAx89Ox8DXU/fA2GG0jILjB6UpFyNugkY9rg6oI31UnvfVi3R7sr3/x8Ea3I9thPvqI2byF6cojknSpDAwYzeKdngX3TAQEGzFHz3SDWwyp3jeMWfwvVVbM38FxhvAnSumw7YwWW4L7M7h4M68isLimoT3yfCn2ucBVL5Dz8koBpYf/40w7QidClAwCafZQFC29yDOg=="' # rubocop:disable Layout/LineLength
|
||||||
|
end
|
||||||
|
|
||||||
|
it 'successfuly verifies signature', :aggregate_failures do
|
||||||
|
expect(signature_header).to eq build_signature_string(actor_keypair, 'https://remote.domain/users/bob#main-key', 'get /activitypub/success', { 'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT', 'Host' => 'www.example.com' })
|
||||||
|
|
||||||
|
get '/activitypub/success', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Signature' => signature_header,
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(response).to have_http_status(200)
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: actor.id.to_s
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with a mismatching path' do
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
get '/activitypub/alternative-path', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Signature' => 'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="date host (request-target)",signature="Z8ilar3J7bOwqZkMp7sL8sRs4B1FT+UorbmvWoE+A5UeoOJ3KBcUmbsh+k3wQwbP5gMNUrra9rEWabpasZGphLsbDxfbsWL3Cf0PllAc7c1c7AFEwnewtExI83/qqgEkfWc2z7UDutXc2NfgAx89Ox8DXU/fA2GG0jILjB6UpFyNugkY9rg6oI31UnvfVi3R7sr3/x8Ea3I9thPvqI2byF6cojknSpDAwYzeKdngX3TAQEGzFHz3SDWwyp3jeMWfwvVVbM38FxhvAnSumw7YwWW4L7M7h4M68isLimoT3yfCn2ucBVL5Dz8koBpYf/40w7QidClAwCafZQFC29yDOg=="', # rubocop:disable Layout/LineLength
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: anything
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with a mismatching method' do
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
post '/activitypub/success', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Signature' => 'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="date host (request-target)",signature="Z8ilar3J7bOwqZkMp7sL8sRs4B1FT+UorbmvWoE+A5UeoOJ3KBcUmbsh+k3wQwbP5gMNUrra9rEWabpasZGphLsbDxfbsWL3Cf0PllAc7c1c7AFEwnewtExI83/qqgEkfWc2z7UDutXc2NfgAx89Ox8DXU/fA2GG0jILjB6UpFyNugkY9rg6oI31UnvfVi3R7sr3/x8Ea3I9thPvqI2byF6cojknSpDAwYzeKdngX3TAQEGzFHz3SDWwyp3jeMWfwvVVbM38FxhvAnSumw7YwWW4L7M7h4M68isLimoT3yfCn2ucBVL5Dz8koBpYf/40w7QidClAwCafZQFC29yDOg=="', # rubocop:disable Layout/LineLength
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: anything
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with an unparsable date' do
|
||||||
|
let(:signature_header) do
|
||||||
|
'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="date host (request-target)",signature="d4B7nfx8RJcfdJDu1J//5WzPzK/hgtPkdzZx49lu5QhnE7qdV3lgyVimmhCFrO16bwvzIp9iRMyRLkNFxLiEeVaa1gqeKbldGSnU0B0OMjx7rFBa65vLuzWQOATDitVGiBEYqoK4v0DMuFCz2DtFaA/DIUZ3sty8bZ/Ea3U1nByLOO6MacARA3zhMSI0GNxGqsSmZmG0hPLavB3jIXoE3IDoQabMnC39jrlcO/a8h1iaxBm2WD8TejrImJullgqlJIFpKhIHI3ipQkvTGPlm9dx0y+beM06qBvWaWQcmT09eRIUefVsOAzIhUtS/7FVb/URhZvircIJDa7vtiFcmZQ=="' # rubocop:disable Layout/LineLength
|
||||||
|
end
|
||||||
|
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
expect(signature_header).to eq build_signature_string(actor_keypair, 'https://remote.domain/users/bob#main-key', 'get /activitypub/success', { 'Date' => 'wrong date', 'Host' => 'www.example.com' })
|
||||||
|
|
||||||
|
get '/activitypub/success', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'wrong date',
|
||||||
|
'Signature' => signature_header,
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: 'Invalid Date header: not RFC 2616 compliant date: "wrong date"'
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with a request older than a day' do
|
||||||
|
let(:signature_header) do
|
||||||
|
'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="date host (request-target)",signature="G1NuJv4zgoZ3B/ZIjzDWZHK4RC+5pYee74q8/LJEMCWXhcnAomcb9YHaqk1QYfQvcBUIXw3UZ3Q9xO8F9y0i8G5mzJHfQ+OgHqCoJk8EmGwsUXJMh5s1S5YFCRt8TT12TmJZz0VMqLq85ubueSYBM7QtUE/FzFIVLvz4RysgXxaXQKzdnM6+gbUEEKdCURpXdQt2NXQhp4MAmZH3+0lQoR6VxdsK0hx0Ji2PNp1nuqFTlYqNWZazVdLBN+9rETLRmvGXknvg9jOxTTppBVWnkAIl26HtLS3wwFVvz4pJzi9OQDOvLziehVyLNbU61hky+oJ215e2HuKSe2hxHNl1MA=="' # rubocop:disable Layout/LineLength
|
||||||
|
end
|
||||||
|
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
expect(signature_header).to eq build_signature_string(actor_keypair, 'https://remote.domain/users/bob#main-key', 'get /activitypub/success', { 'Date' => 'Wed, 18 Dec 2023 10:00:00 GMT', 'Host' => 'www.example.com' })
|
||||||
|
|
||||||
|
get '/activitypub/success', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 18 Dec 2023 10:00:00 GMT',
|
||||||
|
'Signature' => signature_header,
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: 'Signed request date outside acceptable time window'
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with a valid signature on a POST request' do
|
||||||
|
let(:digest_header) { 'SHA-256=ZOyIygCyaOW6GjVnihtTFtIS9PNmskdyMlNKiuyjfzw=' }
|
||||||
|
let(:signature_header) do
|
||||||
|
'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="host date digest (request-target)",signature="gmhMjgMROGElJU3fpehV2acD5kMHeELi8EFP2UPHOdQ54H0r55AxIpji+J3lPe+N2qSb/4H1KXIh6f0lRu8TGSsu12OQmg5hiO8VA9flcA/mh9Lpk+qwlQZIPRqKP9xUEfqD+Z7ti5wPzDKrWAUK/7FIqWgcT/mlqB1R1MGkpMFc/q4CIs2OSNiWgA4K+Kp21oQxzC2kUuYob04gAZ7cyE/FTia5t08uv6lVYFdRsn4XNPn1MsHgFBwBMRG79ng3SyhoG4PrqBEi5q2IdLq3zfre/M6He3wlCpyO2VJNdGVoTIzeZ0Zz8jUscPV3XtWUchpGclLGSaKaq/JyNZeiYQ=="' # rubocop:disable Layout/LineLength
|
||||||
|
end
|
||||||
|
|
||||||
|
it 'successfuly verifies signature', :aggregate_failures do
|
||||||
|
expect(digest_header).to eq digest_value('Hello world')
|
||||||
|
expect(signature_header).to eq build_signature_string(actor_keypair, 'https://remote.domain/users/bob#main-key', 'post /activitypub/success', { 'Host' => 'www.example.com', 'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT', 'Digest' => digest_header })
|
||||||
|
|
||||||
|
post '/activitypub/success', params: 'Hello world', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Digest' => digest_header,
|
||||||
|
'Signature' => signature_header,
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(response).to have_http_status(200)
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: actor.id.to_s
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'when the Digest of a POST request is not signed' do
|
||||||
|
let(:digest_header) { 'SHA-256=ZOyIygCyaOW6GjVnihtTFtIS9PNmskdyMlNKiuyjfzw=' }
|
||||||
|
let(:signature_header) do
|
||||||
|
'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="host date (request-target)",signature="CPD704CG8aCm8X8qIP8kkkiGp1qwFLk/wMVQHOGP0Txxan8c2DZtg/KK7eN8RG8tHx8br/yS2hJs51x4kXImYukGzNJd7ihE3T8lp+9RI1tCcdobTzr/VcVJHDFySdQkg266GCMijRQRZfNvqlJLiisr817PI+gNVBI5qV+vnVd1XhWCEZ+YSmMe8UqYARXAYNqMykTheojqGpTeTFGPUpTQA2Fmt2BipwIjcFDm2Hpihl2kB0MUS0x3zPmHDuadvzoBbN6m3usPDLgYrpALlh+wDs1dYMntcwdwawRKY1oE1XNtgOSum12wntDq3uYL4gya2iPdcw3c929b4koUzw=="' # rubocop:disable Layout/LineLength
|
||||||
|
end
|
||||||
|
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
expect(digest_header).to eq digest_value('Hello world')
|
||||||
|
expect(signature_header).to eq build_signature_string(actor_keypair, 'https://remote.domain/users/bob#main-key', 'post /activitypub/success', { 'Host' => 'www.example.com', 'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT' })
|
||||||
|
|
||||||
|
post '/activitypub/success', params: 'Hello world', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Digest' => digest_header,
|
||||||
|
'Signature' => signature_header,
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: 'Mastodon requires the Digest header to be signed when doing a POST request'
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with a tampered body on a POST request' do
|
||||||
|
let(:digest_header) { 'SHA-256=ZOyIygCyaOW6GjVnihtTFtIS9PNmskdyMlNKiuyjfzw=' }
|
||||||
|
let(:signature_header) do
|
||||||
|
'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="host date digest (request-target)",signature="gmhMjgMROGElJU3fpehV2acD5kMHeELi8EFP2UPHOdQ54H0r55AxIpji+J3lPe+N2qSb/4H1KXIh6f0lRu8TGSsu12OQmg5hiO8VA9flcA/mh9Lpk+qwlQZIPRqKP9xUEfqD+Z7ti5wPzDKrWAUK/7FIqWgcT/mlqB1R1MGkpMFc/q4CIs2OSNiWgA4K+Kp21oQxzC2kUuYob04gAZ7cyE/FTia5t08uv6lVYFdRsn4XNPn1MsHgFBwBMRG79ng3SyhoG4PrqBEi5q2IdLq3zfre/M6He3wlCpyO2VJNdGVoTIzeZ0Zz8jUscPV3XtWUchpGclLGSaKaq/JyNZeiYQ=="' # rubocop:disable Layout/LineLength
|
||||||
|
end
|
||||||
|
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
expect(digest_header).to_not eq digest_value('Hello world!')
|
||||||
|
expect(signature_header).to eq build_signature_string(actor_keypair, 'https://remote.domain/users/bob#main-key', 'post /activitypub/success', { 'Host' => 'www.example.com', 'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT', 'Digest' => digest_header })
|
||||||
|
|
||||||
|
post '/activitypub/success', params: 'Hello world!', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Digest' => 'SHA-256=ZOyIygCyaOW6GjVnihtTFtIS9PNmskdyMlNKiuyjfzw=',
|
||||||
|
'Signature' => signature_header,
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: 'Invalid Digest value. Computed SHA-256 digest: wFNeS+K3n/2TKRMFQ2v4iTFOSj+uwF7P/Lt98xrZ5Ro=; given: ZOyIygCyaOW6GjVnihtTFtIS9PNmskdyMlNKiuyjfzw='
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with a tampered path in a POST request' do
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
post '/activitypub/alternative-path', params: 'Hello world', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Digest' => 'SHA-256=ZOyIygCyaOW6GjVnihtTFtIS9PNmskdyMlNKiuyjfzw=',
|
||||||
|
'Signature' => 'keyId="https://remote.domain/users/bob#main-key",algorithm="rsa-sha256",headers="host date digest (request-target)",signature="gmhMjgMROGElJU3fpehV2acD5kMHeELi8EFP2UPHOdQ54H0r55AxIpji+J3lPe+N2qSb/4H1KXIh6f0lRu8TGSsu12OQmg5hiO8VA9flcA/mh9Lpk+qwlQZIPRqKP9xUEfqD+Z7ti5wPzDKrWAUK/7FIqWgcT/mlqB1R1MGkpMFc/q4CIs2OSNiWgA4K+Kp21oQxzC2kUuYob04gAZ7cyE/FTia5t08uv6lVYFdRsn4XNPn1MsHgFBwBMRG79ng3SyhoG4PrqBEi5q2IdLq3zfre/M6He3wlCpyO2VJNdGVoTIzeZ0Zz8jUscPV3XtWUchpGclLGSaKaq/JyNZeiYQ=="', # rubocop:disable Layout/LineLength
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(response).to have_http_status(200)
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: anything
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
context 'with an inaccessible key' do
|
||||||
|
before do
|
||||||
|
stub_request(:get, 'https://remote.domain/users/alice#main-key').to_return(status: 404)
|
||||||
|
end
|
||||||
|
|
||||||
|
it 'fails to verify signature', :aggregate_failures do
|
||||||
|
get '/activitypub/success', headers: {
|
||||||
|
'Host' => 'www.example.com',
|
||||||
|
'Date' => 'Wed, 20 Dec 2023 10:00:00 GMT',
|
||||||
|
'Signature' => 'keyId="https://remote.domain/users/alice#main-key",algorithm="rsa-sha256",headers="date host (request-target)",signature="Z8ilar3J7bOwqZkMp7sL8sRs4B1FT+UorbmvWoE+A5UeoOJ3KBcUmbsh+k3wQwbP5gMNUrra9rEWabpasZGphLsbDxfbsWL3Cf0PllAc7c1c7AFEwnewtExI83/qqgEkfWc2z7UDutXc2NfgAx89Ox8DXU/fA2GG0jILjB6UpFyNugkY9rg6oI31UnvfVi3R7sr3/x8Ea3I9thPvqI2byF6cojknSpDAwYzeKdngX3TAQEGzFHz3SDWwyp3jeMWfwvVVbM38FxhvAnSumw7YwWW4L7M7h4M68isLimoT3yfCn2ucBVL5Dz8koBpYf/40w7QidClAwCafZQFC29yDOg=="', # rubocop:disable Layout/LineLength
|
||||||
|
}
|
||||||
|
|
||||||
|
expect(body_as_json).to match(
|
||||||
|
signed_request: true,
|
||||||
|
signature_actor_id: nil,
|
||||||
|
error: 'Unable to fetch key JSON at https://remote.domain/users/alice#main-key'
|
||||||
|
)
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
private
|
||||||
|
|
||||||
|
def stub_tests_controller
|
||||||
|
stub_const('ActivityPub::TestsController', activitypub_tests_controller)
|
||||||
|
|
||||||
|
Rails.application.routes.draw do
|
||||||
|
# NOTE: RouteSet#draw removes all routes, so we need to re-insert one
|
||||||
|
resource :instance_actor, path: 'actor', only: [:show]
|
||||||
|
|
||||||
|
match :via => [:get, :post], '/activitypub/success' => 'activitypub/tests#success'
|
||||||
|
match :via => [:get, :post], '/activitypub/alternative-path' => 'activitypub/tests#alternative_success'
|
||||||
|
match :via => [:get, :post], '/activitypub/signature_required' => 'activitypub/tests#signature_required'
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
def activitypub_tests_controller
|
||||||
|
Class.new(ApplicationController) do
|
||||||
|
include SignatureVerification
|
||||||
|
|
||||||
|
before_action :require_actor_signature!, only: [:signature_required]
|
||||||
|
|
||||||
|
def success
|
||||||
|
render json: {
|
||||||
|
signed_request: signed_request?,
|
||||||
|
signature_actor_id: signed_request_actor&.id&.to_s,
|
||||||
|
}.merge(signature_verification_failure_reason || {})
|
||||||
|
end
|
||||||
|
|
||||||
|
alias_method :alternative_success, :success
|
||||||
|
alias_method :signature_required, :success
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
def digest_value(body)
|
||||||
|
"SHA-256=#{Digest::SHA256.base64digest(body)}"
|
||||||
|
end
|
||||||
|
|
||||||
|
def build_signature_string(keypair, key_id, request_target, headers)
|
||||||
|
algorithm = 'rsa-sha256'
|
||||||
|
signed_headers = headers.merge({ '(request-target)' => request_target })
|
||||||
|
signed_string = signed_headers.map { |key, value| "#{key.downcase}: #{value}" }.join("\n")
|
||||||
|
signature = Base64.strict_encode64(keypair.sign(OpenSSL::Digest.new('SHA256'), signed_string))
|
||||||
|
|
||||||
|
"keyId=\"#{key_id}\",algorithm=\"#{algorithm}\",headers=\"#{signed_headers.keys.join(' ').downcase}\",signature=\"#{signature}\""
|
||||||
|
end
|
||||||
|
end
|
||||||
Loading…
Reference in New Issue